This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

XULRunner Error

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by Matt

more options

Unable to start Thunderbird.Pop up on desktop shows the following error code as described below.

Error : Platform version '91.9.0' is not compatible with miniVersion>=91.9.1 maxVersion<=91.9.1

Please advise how to resolve this issue.

Regards, George

Unable to start Thunderbird.Pop up on desktop shows the following error code as described below. Error : Platform version '91.9.0' is not compatible with miniVersion>=91.9.1 maxVersion<=91.9.1 Please advise how to resolve this issue. Regards, George

All Replies (1)

more options

Just reinstall from Thunderbird.net